Lev level of the device, starting at level 00 for the root hub, level 01 for any device attached to the root hub, level 02 for devices attached to hubs at level 01, and so on

Prnt is the parent device for this device (always 00 for the root hub, and 01 for the devices attached to the root hub).

Port is the port on the parent device, starting at 00 for the first port on each device.

Cnt is indicates what number device this is, at this level, based on the enumeration order within that level of the topology, starting at 01 for the first device.

Dev# indicates what number device this is, irrespective of level, based on the bus enumeration order. This is unique per bus.

Spd indicates what speed this device is running at, in Mbps (either 1.5 or 12 with the current version of USB).

MxCh indicates how many devices can be connected to this device, and is 00 for anything except a hub.

D information from the device descriptor.

Ver indicates which USB specification version the device claims to meet.

Cls indicates which device class the device is claiming to meet, in both hexadecimal and as a string. A Cls entry of 00(>ifc) indicates that the device class specification compliance is interface dependent, and the interface descriptor should be read for device class information.